—Tony, could you give me a hand?
—Wait a minute.I ______.
| A．lock the door | B．will lock the door |
| C．am locking the door | D．was locking the door |
This is not my story, nor ______ the whole story. My story plays out differently.
| A．is there | B．there is | C．is it | D．it is |
At school, some students are active ______ some are shy, yet they can be good friends with one another.
| A．while | B．although | C．so | D．as |
—Goodbye, John. Come back again sometime.
—Sure. ______.
| A．I did | B．I do | C．I shall | D．I will |
New technologies have made ____ possible to turn out new products faster and at a lower cost.
| A．that | B．this | C．one | D．it |
—Excuse me. How much is the shirt?
— _______.
| A．Extra Large | B．50 each | C．It sells well | D．Altogether there are 5 |